The organization in Virginia is angry over a syndicated column by the Pulitzer Prize winner in which he discussed the murder of a white couple, the suspects, and white supremacists and conservative bloggers, Editor & Publisher reported.
Pitts, an African American, has received threats after the posting.
Dave Wilson, Miami Herald managing editor for news, asked the site's editor to remove Pitts' home information. Nelson said Overthrow.com site editor Bill Wilson told him: "We have no intention of removing Mr. Pitts' personal information. Frankly, if some loony took the info and killed him, I wouldn't shed a tear. That also goes for your whole newsroom."
Wilson said some of the messages were "thoughtful," while others were "very unsettling" and were referred to the newspaper's legal representatives.
In his column, Pitts noted some people and organizations alleged that black crimes against whites were underreported. He countered the claim, citing several studies.
Pitts concluded: "I have four words for ... any other white Americans who feel themselves similarly victimized. Cry me a river."
Interpol investigating stolen passports on missing flight
Senate Democrats to pull all-nighter on climate change